I'm 36 and seriously grey. And probably outing myself here, too.
I found my first grey hair at 15 and have dyed it for twenty years. Twenty years, fgs- that is a ridiculous amount of time to be a slave to the dye. Not to mention the stupid expense, outrageous amount of time wasted and results that, lets face it, I only really liked for two out of eight weeks.
Because even if I went to the hairdressers, the results were never quite the way I wanted them to be. And then my roots would start showing after about two weeks. Or, if I did the dye myself it was always too dark/too light/too red and then once it had toned down to a better shade, guess what? My roots would be showing.
Last year, I had a bit of a 'moment' and decided to stop dying it. I am now almost evangelical about grey hair. I have a fairly thick white stripe on either side of my parting (pic on profile...not very clear, but you get the idea 
) and I LOVE it. I've still got a few inches left to grow out, but I am so, so glad I decided to stop dying. I only ever used a semi permanent, so don't have a particularly strong 'tideline' as such...even so, I was surprised by how much the semi colour just stayed.
The condition of my hair has massively improved. I always mistakenly thought that the dye made it shinier and improved the condition, but now I'm able to see my natural (undyed) hair, I can see that the dye has made it almost strawlike in comparision. I definitely don't see that the texture of the white hairs is different. I'm just as likely to see crazy wiry jet black hairs frizzing everywhere as I am the silvery ones.
Like lots of posters on here, I use the Elvive oil and think it's great. Once it's been blowdried and straightened, I love the look of it and look forward to an all white 'do'!
I do get it cut quite regularly into an inverted bob, but once all the colour has been cut out, I'd love to grow it long again.
I found some amazing photos on pinterest of silver haired women, but not so many of women my age, so I went on a bit of a google. I found these two blogs
www.highlandfashionista.com/search/label/The%20Gray%20Area Highland Fashionista and
howbourgeois.blogspot.co.uk/2013/01/seven-best-tips-tricks-for-successfully.html How Bourgeois - both women look fantastic in my opinion. There are some great tips on both blogs about 'transistion' and pratical ways to deal with it. Going grey should be normal. Not like bloody 'Kate' and her four moves and fifteen babies...The ridiculous negative comments and connotations that people make about grey hair make my blood boil, truly. It's just a different colour, fgs.
And of the course, another unexpected bonus is that I can now use Batiste dry shampoo with impunity, as even if I miss brushing some of it out, it just looks like my natural hair colour